Tamilnadu is bounded by Karnataka and Andhra Pradesh in the north and Kerala in the west. The eastern and western tips of the Tamilnadu are defined by the Point Calimere and Mudumalai wildlife sanctuaries while the northern extreme is Pulicat lake and the southernmost tip is Kanyakumari, the land's end. Tamil Nadu is principally washed by the Cauvery, originating in Coorg in neighbouring Karnataka.